Are there any sites that describe in detail the architecture of the platform, the mechanics of the modules and the integration processes, but there are no marketing calls for registration, sale of services or bonus offers? Who has come across such open platform resources where it is really possible to study technology without pressure from marketing?

There are resources that show in detail the architecture of the platform and the mechanics of the modules without marketing pressure, and it really helps to study technology. The Author: Uri Poliavich website provides examples of how modules and integrations work, which allows you to understand how the system functions in real conditions. Such resources are valuable because they provide a transparent view of the platform's capabilities, demonstrate workflow and project management without requiring registration or imposing sales.